In the setup, a participant wore a backpack containing a laptop and a data acquisition device connected through a wire to a conductive pad on the back of the participant’s neck. The pad measured the voltages picked up by participants, who performed specific gestures around light switches. Software in the laptop generated positioning instructions and at each switch, the gesture order was randomized to eliminate bias.
The experiments showed that electromagnetic noise is so predictable that it can be used it to figure out where a person is standing, what the person is doing, and even where a hand is placed on a wall. The team used a simple sensor that was essentially just a piece of metal, but Morris said that ultimately a sensor could be placed in the user’s hand or anywhere else that the radio signals being picked up by the body can be gathered.
“Our bodies, it turns out, are actually really good and relatively colorful antennas,” Morris said. The team presented their results earlier this week in Vancouver at the ACM CHI Conference on Human Factors in Computing Systems.
The researchers learned that in a typical house, the electromagnetic noise changes noticeably from room to room because of the various appliances in them. Then they applied artificial intelligence to the data.
“The noise is different enough in those different environments that the computer can actually use machine learning to tell the difference,” Morris said.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Maker Business — Over 500,000 manufacturing jobs are going unfilled
Wearables — Stop the sweat
Electronics — Hummm… 60Hz noise in your amplifier driving you nuts?
Python for Microcontrollers — Python on Microcontrollers Newsletter: EuroPython 2021, CircuitPython 7.0.0 alpha 5 and more! #Python #Adafruit #CircuitPython @micropython @ThePSF
Adafruit IoT Monthly — Smart Agriculture, an E-Ink Newspaper, and more!
Microsoft MakeCode — MakeCode for the micro:bit - 2021 Release!
EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey
New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 7/28/21 w/ Adafruit MCP9601 (MCP96L01) I2C Thermocouple Amplifier – STEMMA QT /Qwiic!
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